A combobox is a list the user can choose from.
You can make a specific item be "selected" in the list, but there is nothing to stop the user from changing it to something else. If you have logic that details a specific item, then why use a combobox?
In any case, it will be something like:
If OptionButton.Value = True Then
ComboBox1.ListIndex = 3
End If
This would display the fourth item (they are 0 based) in the combobox list. But again, the user could change this. Is that what you want?
Or is what you want, is to ensure that at least one of the combobox list is selected? In other words, you want to make sure the combobox list is not skipped over? That is another issue, and easily dealt with...if that is actually what you want to happen.
Could you explain the logic tying a True/False condition to a specific item in a list?
True Dallas
Chicago
New York
Seattle
False Dallas
Chicago
New York
Seattle
You have two choices, True or False, but FOUR results. I make a "True" choice (radio button is ON). Say you make the logic that if Value = True, Dallas is selected...well True will always make Dallas selected. The user changes Dallas to New York. Then what is the point to having True = Dallas selected?
If the combobox is a list of potential offices when a Purchased? condition is True, then it seems to me that the logic is to require a selection from that list, not to specify a selection. Especially when the user can change that specified selection.
Gerry